Here, we want to mention that regional geologists from the Zaragoza university and the Madrid Center of Astrobiology (Ángel Luis Cortés, Marcos Aurell, Enrique Diaz-Martínez, and others), which basically deny an impact in that region, consider this typical breccia a lacustrine sediment or even a conglomerate (Aurell et al. 1993; Cortés, Nov. 6, 2002, Heraldo de Aragón).